One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8)(3,10,13,7)(4,5,15,9)(11,12,14,16)(17,18,23,24)(19,25,21,27)(20,30,31,26)(22,28,32,29)(1,3,6,13)(2,7,8,10)(4,14,15,11)(5,12,9,16)(18,24)(20,31)(25,27)(28,29)(33,34,38,41)(35,36,43,39)(37,40,46,48)(42,44,45,47)(2,8)(4,15)(7,10)(11,14)(17,19,23,21)(18,25,24,27)(20,29,31,28)(22,26,32,30)(33,35)(34,39)(36,41)(37,42)(38,43)(40,47)(44,48)(45,46)(1,4)(2,9)(3,11)(5,8)(6,15)(7,12)(10,16)(13,14)(17,20)(18,26)(19,29)(21,28)(22,27)(23,31)(24,30)(25,32)(33,36,38,39)(34,35,41,43)(37,44,46,47)(40,42,48,45)(1,3)(2,10)(4,14)(5,16)(6,13)(7,8)(9,12)(11,15)(17,21,23,19)(18,27,24,25)(20,29,31,28)(22,26,32,30)(33,35)(34,36)(37,45)(38,43)(39,41)(40,47)(42,46)(44,48)(1,5,6,9)(2,4,8,15)(3,12,13,16)(7,14,10,11)(17,22,23,32)(18,28,24,29)(19,26,21,30)(20,27,31,25)(33,37)(34,40)(35,42)(36,44)(38,46)(39,47)(41,48)(43,45)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.